Discharge Phenomenon Analysis of Gas Insulated Current Transformer

XU Peng; CAO Yarong; ZHAO Wenhan; YAO Qingyue; GAN Qiang

doi:10.14044/j.1674-1757.pcrpc.2020.05.017

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Discharge Phenomenon Analysis of Gas Insulated Current Transformer

更新时间：2024-09-14

- Discharge Phenomenon Analysis of Gas Insulated Current Transformer
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 5, Pages: 99-103(2020)
- 作者机构：
  
  1. 国网江苏省电力有限公司检修分公司
  2. 国网江苏省电力有限公司南京供电公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.05.017
  CLC： TM452
- Published：2020，
- 稿件说明：
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[1]徐鹏,曹雅榕,赵文翰,姚庆悦,甘强.一起气体绝缘式电流互感器放电现象分析[J].电力电容器与无功补偿,2020,41(05):99-103.

XU PENG, CAO YARONG, ZHAO WENHAN, et al. Discharge Phenomenon Analysis of Gas Insulated Current Transformer. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 99-103.
[1]徐鹏,曹雅榕,赵文翰,姚庆悦,甘强.一起气体绝缘式电流互感器放电现象分析[J].电力电容器与无功补偿,2020,41(05):99-103. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.017.

XU PENG, CAO YARONG, ZHAO WENHAN, et al. Discharge Phenomenon Analysis of Gas Insulated Current Transformer. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 99-103. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.017.

摘要

气体绝缘电流互感器以其结构简单、绝缘性能良好等优势在电力系统中得以广泛应用

是电网保护及测量的主要设备

分析电流互感器的故障成因对维护电网安全意义重大。论文针对一起500 kV SF

电流互感器绝缘击穿现象展开研究

分析该型电流互感器结构

建立介质模型

进行电场计算

对比使用自制外套、Axicom外套以及国内其他结构流变工作电场强度

并分析故障成因

最终得出本次SF

电流互感器放电现象是由于流变内部绝缘裕度不合理造成

为同类型气体缘式电流互感器的设计优化、故障诊断和运行维护提供参考。

Abstract

gas insulated current transformer is widely used in power system thanks to its simple structure and perfect insulation performance and is the main equipment for protection and measurement of power grid.It is of great significance to analyze the fault causes of current transformer for maintaining power grid security.In this paper

the insulation breakdown phenomenon of a 500 kV SF

current transformer is studied

the structure of the current transformer is analyzed

the dielectric model is established and the electric field is calculated.The rheological electric field strength of self-made coat

Axicom coat and other domestic structures are comparedand the fault causes are analyzed.Finally

it is concluded that the d

ischarge of SF

current transformer is due to unreasonable rheologic al intern al insulation margin

which can provide reference for design optimization

fault diagnosis and operation maintenance of the same type of gas insulated current transformer.

关键词

SF6电流互感器绝缘击穿电场计算故障诊断

Keywords

SF6 current transformerinsulation breakdownelectric field calculationfault diagnosis

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